Introduction
Biodiesel is one of the most attractive renewable fuels since it
offers many advantages. For instance, it is obtained from vegetable/
animal oils or fats which can be of local origin and has properties
similar to conventional diesel facilitating its use in normal diesel
engines without major modifications (US Department of Energy,
2006). In Thailand, biodiesel is mainly produced from oil palm (Elaeis
guineensis) which is widely grown in the southern part of the country.
The Thai government is promoting the use of biodiesel, as a blend
with conventional diesel, primarily to reduce crude oil imports and
strengthen local livelihoods especially for the agricultural sector. The
reduction in greenhouse gas (GHG) emissions is also an important
consideration. Many studies have shown that biodiesel has positive
energy balance and negative GHG balance which means it gives more
energy with less emission than petroleum diesel (Pleanjai and
Gheewala, 2009; US Department of Energy, 2006).
IntroductionBiodiesel is one of the most attractive renewable fuels since itoffers many advantages. For instance, it is obtained from vegetable/animal oils or fats which can be of local origin and has propertiessimilar to conventional diesel facilitating its use in normal dieselengines without major modifications (US Department of Energy,2006). In Thailand, biodiesel is mainly produced from oil palm (Elaeisguineensis) which is widely grown in the southern part of the country.The Thai government is promoting the use of biodiesel, as a blendwith conventional diesel, primarily to reduce crude oil imports andstrengthen local livelihoods especially for the agricultural sector. Thereduction in greenhouse gas (GHG) emissions is also an importantconsideration. Many studies have shown that biodiesel has positiveenergy balance and negative GHG balance which means it gives moreenergy with less emission than petroleum diesel (Pleanjai andGheewala, 2009; US Department of Energy, 2006).
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